在ubuntu 16.04 server版上安装pip、pip3、ipython2和ipython3
具体步骤如下：
wangpeng@ubuntu:~$ sudo apt install python3-pip wangpeng@ubuntu:~$ sudo apt install python-pip wangpeng@ubuntu:~$ sudo pip3 install ipython wangpeng@ubuntu:~$ wget https://pypi.python.org/packages/f7/48/5702699caf20208d61a92157c01d1eb281093e3e02e9bcd4b5031ccea6a1/ipython-5.4.1-py2-none-any.whl#md5=2b801f50b5e82a3fabca42b661568bf5 wangpeng@ubuntu:~$ sudo pip install ipython-5.4.1-py2-none-any.whl wangpeng@ubuntu:~$ ipython2 Python 2.7.12 (default, Nov 19 2016, 06:48:10) Type "copyright", "credits" or "license" for more information. IPython 5.4.1 -- An enhanced Interactive Python. ? -> Introduction and overview of IPython's features. %quickref -> Quick reference. help -> Python's own help system. object? -> Details about 'object', use 'object??' for extra details. In [1]: wangpeng@ubuntu:~$ ipython3 Python 3.5.2 (default, Nov 17 2016, 17:05:23) Type 'copyright', 'credits' or 'license' for more information IPython 6.1.0 -- An enhanced Interactive Python. Type '?' for help. In [1]:
